Exam 9: Physical and Chemical Control of Microbes

The method of removing vegetative microbial life forms from inanimate objects is termed ________.

Following successful placement of the central venous line, the RN is diligent to prevent infection when accessing the catheter and administering medications. Which of the following actions should be completed prior to use of the line?

The removal of all life forms from inanimate objects is termed ________.

The RN practices proper handwashing technique when his hands are visibly dirty. Which of the following terms most appropriately describes the type of antimicrobial control provided by handwashing with germicidal soap and water?

Which of the following microbes are targeted by alcohol-based hand cleaners?

Temperature and time must be considered when determining susceptibility of microbes to lethal conditions. At a specific temperature, the thermal death ________ can be determined, alternatively, the thermal death ________ can be assessed as the lowest temperature that will kill a test organism in 10 minutes.

Prior to placement of the central venous line, the patient's skin is scrubbed with chlorhexidine. Which of the following microorganisms are targeted by this chemical agent?

Bacteristatic agents kill bacterial cells.

Vials of microorganisms that undergo the freeze-drying process called ________ will remain preserved and viable for years.

________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

Removal of moisture by dehydration is called ________.

Phenols are useful antimicrobial compounds in that they are effective against bacteria fungi and viruses, disrupting several cellular targets, however, they have been removed from many consumer products because of their high toxicity and propensity to select for resistant strains of microorganisms.

Which of the following represents the use of osmotic pressure as a microbial control method?

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

The RN prepares the patient for the sterile procedure. Which of the following statements made by the patient, best demonstrates understanding of the need for sterile equipment and aseptic procedures?

________ is a control method that removes microorganisms rather than inhibiting or killing them.

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is ________.

Pasteurization ________.

Antimicrobial agents can target the cell wall by ________.

The most efficient sterilizing conditions in a steam autoclave are ________.